Well, you've increased the weight you are accelerating by almost 20%, so yeah you will notice that. When folks say they don't know its there, they probably mean maneuvering or just plain driving down the highway.

Drivers should notice their toad. It's always having some effect one steering and acceleration, and definitely will have an effect on braking. The more massive toads of course will have greater effect. Consider a 30,000# MH with a 3000lb toad... 10% is a lot and your CRV likely weighs more than the one in the example given. The increase in stopping distance is the reason why most US states and CN require toads to have aux. braking systems.

I tow a Hyundai Azera on a dolly, adding 4500 lbs, or about 20% of my original coach weight, so I notice a difference when starting and stopping, but once you are rolling, there isn't much of a difference. In order to accommodate for the difference when starting, I take a lot longer to get up to speed. It saves the engine and gas mileage. When stopping, I take a lot longer to slow down and I coast as far as possible by allowing much more room between myself and the next vehicle if front of me. Also, try to keep your eye on the road as far away as possible, a ¼ mile if you can, rather than just on the car in front of you. This will give you a lot more time to slow down and stop rather than having to make quick stops that eat up your mileage and brakes.

I think most of us become aclimated to towing nearly all of the time and really don't notice it's there. I recently took my MH in for service and really noticed the difference in acceleration due to dropping the 4, 600 lb. Jeep Rubicon. I realized that I hadn't driven the MH without the tow for over a year. In this instance I drove 30+ miles of highway, but more often most probably never leave local streets for such a task.